The brilliant J. Smith-Cameron blew us away in “Margaret” (written and directed by her husband, Kenneth Lonergan) and in the acclaimed series “Rectify.” Currently she’s starring in the new play “Peace For Mary Frances” (with Lois Smith), and the praiseworthy film “Nancy” (written and directed by Christina Choe and co-staring Andrea Riseborough and Steve Buscemi), which opens Friday June 8th. We talk extensively about her work in the latest two pieces and how her desire for rehearsal is sometimes satisfied in a roundabout way on a TV shoot. She also shares what she does right before she steps on the stage and how she feeds her “inner actor” when she’s not working.